Remove the plug (Item 1) [Figure 20-41-84] or optional port relief valve from the control valve.
NOTE: Optional port relief (Item 1) [Figure 20-41-84] is 3500 PSI.
Remove the O-rings (Item 1) [Figure 20-41-85] & [Figure 20-41-86] and back-up ring (Item 2) [Figure 20-
41-85] & [Figure 20-41-86] from the plug.
